Nailing-machine



(No Model.) 2 Sheets-Sheet I.

A.fNEW'lOlV.v

V1\IaJi1iI1 Machine.

Patented June 28, |881.

| i Jg! TIU ` (No Model.) 2 SheetS-Shet 2.

A. NEWTON.

Nailing Machine. No. 243,601. Patented June 28,1881.

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\. W f/y d Fig. 6 represents a similar ,'Fig. 15 represents a UNITEDSTATES PATENT OrricE.l

ARTHUR NEWTON, OF BOSTON, MASSACHUSETTS.

NAlLlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 243,601, dated June 28,1881.

To all whom it may concern:

Be it known that I, ARTHUR NEWTON, of Boston, in the county ofSuiolk'and State of Massachusetts, have in vented certain Improvementsin Boot and Shoe Sole Nailing Machines, of which the following is aspecifica tion.

This invention relates to machines for cutting corrugated r other wireinto nails for attaching soles to boots and shoes, and driving saidnails as fast as they are formed.

.The invention has for its object, irst, to provide an improved meansfor converting such Wire into nails, whereby the cutters used in formingthe chisel-points on the nails are prevented from bending or distortingsaid points.

The invention also has for its object to pro-f vide certain improvementsin a machine embodying mechanism for carrying' out my irnproved methodof pointing, said improvements relating to mechanism for feeding thewire, mechanism for presenting the completed nails to the driver, andmechanism for feeding the boot or shoe sole while it is being nailed.

To these ends my invention consists in the improvements hereinafterdescribed and claimed. v

Of the accompanying drawings, forming a part of this specification,Figure 1 represents a side elevation of a machine embodying myinvention. Fig. 2 represents an end elevation of the same. verticalsection on line yy, Fig. 2. vFig.4rep resents a transverse verticalsection on line m Fig. 1. Fig. 5 represents anenlarged longitudinalsection of the mechanism forpointing and severing the nails, showing theposition of the parts while the pointis being formed. section, showingthevnailv severed from the wire and presented to the driver. Fig. 7represents a section on line z z, Fig. 5. Figs. 8 and 9 represent,respectively, bottom and end views of the fixed block in which` the wireis held while being pointed. Fig. 10 represents a section on line z z',Fig. 8. Figs. 11, 12, 13, and 14 represent, respectively, top, bottom,end, and side views of the cutters used in pointing the nails, andperspective view of the sama Fig. 16 represents a side view of the wireafter the notches are formed thereon.

. acute angles with their bottom surfaces.

Fig. 3 represents a longitudinal Application filed January 19, 1881. (Nomodel.)

The same letters of reference indicate the same parts in all the gures.

In the drawings, A represents a frame of suitable construction forsupporting the mechanism hereinafter described.

B represents the driving-shaft journaled in the frame, and provided withcams C, D, E, and F, for operating the Wire-feeding mechanism, thenail-pointing mechanism, the nail severing and presenting mechanism, andthe driver-bar.

The nail forming or pointing mechanism is composed of a fixed block, H,rigidly attached to xed supports I I-on the frame A, and provided with awire-guide orifice, K, a movable block, L, adapted to slide between thesupports I I, and provided with a guide-orifice, M, adapted to coincidewith the orifice K, and a pair of cutters or chisels, N N, rigidlyconnected and adapted to reciprocate in guides Nl N formed in the underside of the block H. The cutters N N are sepaited 'by a wedgeshapedspace, O, and their inner sides form The ends of the cutters are beveledto form cutting-edges c e on the bottom surfacesand cutting-edges e2 e2on the proximate sides of the cutters, as shown in Fig. 15. The bottomsurfaces ofthe cutters are in close contact with the surface of theblock L. The form and arrangement ot the cutters are such that when theyare reciprocated they will have a planing action on and thus removekportions of the metal from the opposite sides of a wire, P, inserted inthe guide-orifices K M, and thereby form notches a a, each notch beingcomposed of a beveled surface, 1, subsequently forming one of the sidesof achisel-point, and a surface, 2, substantially at right angles withthe length of the wire, and subsequently forming a portion ofthe head orouter end of a nail. -The notches do not quite sever the wire, but leavea thin neck between the notches, which neck can be easily broken, ashereinafter described. The notches n a are formed at a distance from theend of the wire equal to the length of one nail, and the block L is ofsuflicient depth to contain the portion of the wire below` the notches aa. 1t will be seen, therefore, thatwhen the block L is in position tocause its IOG orice M to coincide with the'oriiice Kot the block H, asshown in Fig. 5,'and the wire P is -inserted 'in both of said orices,the wire is i by the cutters of the metal not removed in forming thenotches, hence the points of the nails are not made wider than thediameter of the wire. It will also be seen that by moving the block L,after the notches a n are formed, the thin neck between said notcheswill be severed thereby, severing the portion of the wire contained insaid block, and at the saine time completing the chisel-point on the endof the wire in the fixed block H, as shown in Fig. 6, the surface formedby the breakage of the thin neck eonstitutin g the apex of thechiselpoint. The severed portion P of the Wire now constitutes acompleted nail, its head or outer end being completed by the severing ofthe neck, and its cliisel-point having been previously formed by anoperation similar tol that above described.

This improved method of forming nails from continuons wire differs frommethods heretofore employed in forming the beveled sides of thechisel-point by cutters moving parallel with each other and having aplaning action. Heretofore the wire has been indented at a distance fromits end to form the point ofeach nail by cutters moving toward eachother, said cutters displacing the metal so as to make the points widerthan the diameter of the wire. It is obvious that by my improved methoda more perfect point is formed, the point being of the same width as thediameter of the wire.

I form on the under side of the fixed block H a wedge-sliaped rib, R,fitting closely in the space between the cutters N N, and intersect- Vedby the orifice K. The ends of said rib, on

either side of the orifice K, support the wire laterally between theproximate surfaces of the blocks H L, and constitute a safeguard againstthe slightest bending of the wire under the inuence of the cutters atthe point where the notches n a are formed. The cutters N N, afterforming the notches n n, remain in contact with the wire until the blockL has been moved, the inner side of one of said cutters constituting anedge or shear tovsupport the notched portion of the wire, and cooperatewith the surface of the block L to sever the neck between the notcheswhen the block Lis moved. The cutters N N are reciprocated by means ofthe cam D on the driving-shaft B, and a lever, S, pivoted at T to theframe A, and at T to the stock U, to which said cutters are attached. Aspring, V, holds the upper end of the lever S in contact with the cam D.

The mechanism for feeding the wire P to the pointin g mechanism lastdescribed is composed of a pair of plates or feed-jaws, a a, lo-

cated on rods b b, which are adapted to slide in bearings in abifurcated yoke or frame, c. The jaws a a may be coated with rubber ontheir proximate surfaces, or may have steel plates with grooved orrougheiied surfaces, the latter being preferable, and the wirel to befed is interposed between said surfaces. Springs d d on the rods b bpress the jaws a a against the wire and cause them to normally hold orgrasp the saine with sulicient tightness to enable them, when movedtoward the block H, to feed the wire into said block. The frame c isprovided with a vertical arm, f, adapted to slide in a socket in theframe A. The frame c is pressed, by a spring, g, against the cam C onthe driving-shaft, and is therefore reciproj cated vertically when theshaft rotates.

h represents a wedge located on the driverbar t', which bar is alsoreciprocated vertically by means of the cam F, a stud, 7c, from said barbearing on the cam, and a spring, j, adapted to force thedriver-loarabruptly downward when the cam passes from under the stud 7c.The wedge h is so arranged and the driver-bar i is so timed in itsmovements that when the feedjaws a a rise the wedge will also rise, andat the same time insert itself between and separate the jaws a a, sothat during their upward movement they will not move the wire. Vhen thejaws a a have completed their upward movement they descend before thedriver-bar, so that the wedge remains behind, and the jaws are caused,by their springs d d, to grasp the wire and feed it downward into theblocks H and L. The length of movement given to the wire, andconsequently the length of each nail, is determined by a sliding wedge,l, on lthe frame A, said wedge constituting an adjustable stop for anarm, m, on the slide f, and limiting the downward movement of the slidef, the frame c, and the feed -jaws a a. When the operator desires tochange the length of the nails he moves the wedge Z in one direction orthe other, thereby permitting the slide j' to descend more or less. Thewedge l may be moved by the operators foot through a treadle andsuitable intermediate mechanism, so that the length of the nails may bevaried While the machine is in operation.

n' represents a guide, through which the nails are driven by the drivert", rigidly attached to the driver-bar t', into a boot or shoe held on asuitablejack (not shown) under said guide. The movement of the block L,whereby each nail is severed or broken from the wire, is effected by thecam E and intermediate mechanism, consisting of the pivoted lever E andthe connecting-rod E2. cient to cause the orifice M of said block L tocoincide with thev guide n', and thus present the nail to the driver i.

For the purpose of feeding the sole as it is being nailed, I employ afeed-dog, p, pivoted to the lower end of a bent lever, i", and arrangedto bear upon the sole when the saine is held in position to receive thenails from the Said movement is suffi- IOO IIO

guide-orifice a. The lever r is pivoted at s to the trame A, and isprovided with an inclined is moved in the opposite direction the teethvwill engage with the surface of the sole and move the latter. Theinoperative movement of the feed-dog is effected by the downwardmovement of the driver-bar i, and the operative movement by the upwardmovement of .said bar; hence the feeding movement of the sole iseffected after each nail has been driven. W'hile the inoperativemovement ot the feeddog is being effected the nail is entering the solefrom the guide n', and is not completely driven until said movement iscompleted; hence the partially-driven nail prevents the sole from beingmoved during the inoperative movement of the feed-dog. By operating thesole-feed directly from the driver-bar, as described, I obviateanyliability of change in the relative movements of the feed-dog and thedriver-bar, such as might occur if the feed-dog were operated directlyfrom the driving-shaft.

The operation of the described machine as a whole is as follows: Theblocks H L being in the position shown in Figs. l, 3, and 5, the wire isfed into the orifices in said blocks and held frmlytherein. The cuttersN N then advance and form the notches n n on the wire, the cuttingsremoved by the cutters being ejected through an inclined spout, w,formed in one of the supports 1. The block L is now moved forward,severing the nail, as previously described, and when its orifice Mcoincides with the guide n', as shown in Fig. 6, the driver-bar 2'.,which has been previously raised, descends, bringing down the driver'z",which drives the nail through the guide n into the sole below. After thenail is thus driven the block L is moved back until its orifice Mcoincides with the-orifice K; and when said orifices coincide thefeed-jaws a a, which were raised Y while the block L was moving back,descend, and again feed the wire, as above described. The cutters N Nmove back before the wire is fed, so that they leave the orifice Kunobstructed for the passage of the wire into the orifice M. Theopera'tion is thus repeated as long as desired.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, isi- 1. In a sole-nailing machine, the above-described means for converting wire into chiselpointed nails, said meansconsisting in a fixed block, H, having an orifice to contain the wire, apair of chisels reciprocatin gin guides formed in the block H, adaptedto remove metal from opposite sides of the wire, thereby partiallyforming the point of one nail and the head of the preceding nail, and amovable blockLL, having a wire-receiving orifice adapted to coincidewith the orifice in the fixed block and assist the latter in holding thewire and to be moved laterally after the action of the cutters to severthe wire, and thereby complete said t head and point, as set forth.

2. The combination, with the fixed bloclrH andthe movable block L,having the wire- Yholding orifices, the cutters or chisels N N, havvingplaning cutting-ed ges to form notches in the opposite sides of the wireheld in said orifices', and adapted to remain stationary in contact withthe wire when the block L is moved, thereby supporting the notchedportion ofthe wire and co-operating with said block L in severing theneck of wire between the notches, as set forth.

3. The combination of the finedV block H,

having the guide-orifice K, the reciprocating notchin g cutters N N, themovable Lblock L,

having the oritice or holder M, the driver t', the fixed guide-orificen', through which the nails are forced by the driver i', and mechanismfor reciprocating the movable block, whereby its orifice or holder isalternately caused to coincide with the orifice K to hold the wire whileit is being notched, and with the orifice n to present the nails to thedriver i', as set forth.

4. As a means for holding and notching the opposite sides of wire in asole-nailing machine, the combination ot' the fixed block H, having thewedge-shaped rib R and the guideoritice K, terminating in said rib, themovable block L, having its upper surface in close proximity to theouter edge or apex of the rib, and provided with the guide-orifice M,adapted to coincide with the orifice K of the fixed block H at statedtimes, and the reciprocating cutters N N, separated by a wedge-shapedspace closely fitting the rib R and adapted to form notches a n in theopposite sides of wire held in the orifices, as set forth.

5. The combination of the fixed block H, having the wire-guide M andcutter-guides N N', the cuttersN N, fitted closely in said guides, andthe inclined channel w, formed in the supports on which the block Hrests, for the escape of the cuttings removed by the cutters lN N, asset forth.

6. The wire-feeding mechanism consisting of two opposing separable jaws,a a, pressed against the wire interposed between them by springs andmounted on an intermittently-reci procating yoke or frame, c, combinedwith a wedge, h, on the driver-bar reciprocating in- IOO IIO

press said feeddog against the sole, as set forth.

'In testimony WhereofI have signed my name to this specification, in thepresence of two subi5 soribing Witnesses, this 15th day of January, A.l). 188i.

ARTHUR NE VVTON.

Witnesses:

G. F. BROWN, W. GLrMo..

